Catalyst for the dimerization of diolefins using the reductive properties of metal carbonyls
US3954665A · kind A · utility
12Cited by
6References
13Claims
0Family size
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Key dates
| Filing date | Apr 11, 1974 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Apr 11, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The liquid phase dimerization of diolefins is effected by maintaining the diolefins in solution in an inert solvent in contact with a catalyst which is the reaction product of a transition metal carbonyl and a compound which is a transition metal halide or pseudo halide coordinated with groups capable of furnishing three electrons. The dimerization of butadiene to vinyl-4-cyclohexene and cyclooctadiene and the dimerization of C.sub.4 cracked fractions into vinyl-4-cyclohexene are preferred reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.